# Chronnika vs TwentyOne

The clearest difference is update cadence: TwentyOne at every 2 days against Chronnika's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Chronnika sells 2 in-app purchases, starting at $9.99 per 7 days and TwentyOne sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Chronnika ships an update every 3 weeks, TwentyOne every 2 days. The most recent releases landed on November 12, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Chronnika | TwentyOne |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 38 MB | 5 MB |
| Requires iOS | **16.1** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sergei Kudriashov](https://appshunter.io/developer/1738959412) | [Aleksandr Pustotin](https://appshunter.io/developer/1854093247) |

## What reviewers say

### Chronnika

[App page](https://appshunter.io/ios/app/chronnika/id6480464069)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Yearly | $59.99 | per year |


### TwentyOne

[App page](https://appshunter.io/ios/app/twentyone-habit-tracker/id6763133927)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cup of Coffee | $0.99 | one-time |
| Large Cup of Coffee | $2.99 | one-time |


## Frequently asked questions

### Is Chronnika free?

Chronnika is free to download, with in-app purchases available.

### Is TwentyOne free?

TwentyOne is free to download, with in-app purchases available.

### Do Chronnika or TwentyOne have ads?

Neither Chronnika nor TwentyOne shows ads.

### Which is updated more often, Chronnika or TwentyOne?

Chronnika ships an update every 3 weeks, and TwentyOne every 2 days. Most recently, Chronnika was updated on November 12, 2026 and TwentyOne on November 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*